Residential Water Piping Replacement Permit Requirements
This permit will allow replacement of the existing interior and exterior water piping
The following are the minimum requirements that must be met:
- The zoning at the address must be residential.
- The new interior water piping materials shall be copper, galvanized iron, galvanized steel, PEX or approved plastic.
- Extensive removal of the walls or ceiling structure could require an additional building permit.
- Plumbing faucets and valves may be replaced in the same location as part of the
water piping replacement permit work. New or replaced shower or tub-shower control
valves must be the pressure balanced and set at a maximum of 120� F.
- Grounding and bonding of the electrical service is required when the water piping
is replaced. Grounding and bonding shall comply with the current California Electric
Code. Contact the Building Division at (650) 903-6313 for requirements and handouts
on the bonding and grounding requirements.
- Grounding of the electrical service is required with all re-pipes. Grounding shall
consist of a continuous grounding conductor run from the panel to a ground rod (grounding
electrode) and to the cold water pipe. Grounding of the electrical service at the
main water line must be within the first 5� of water piping into the building. The
underground water service shall not be used as the sole grounding system; it must
be supplemented with a ground rod.
The Water Piping Permit is NOT available if you are:
- Replacing or repairing the tub or tub-shower enclosure. See the e-Permits menu for
those available permits.
- Adding new water piping as part of a larger remodeling project.
- Relocating plumbing fixtures, faucets, or valves.
Inspections
Two inspections are required:
- Rough - A rough inspection should be scheduled when the new water line is installed and before it is covered up.
- Final - A final inspection should be scheduled after all work is complete.
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